—– Original Message —–
From: Stevesmith1
To:
Sent: Friday, August 11, 2000 8:02 AM
Subject: Re: Puzzled about pressure casting
> Mark
> this is a good topic of discussion for the group, I have always found the
> hydrostatic casting to go against what i have been taught. as you need to
> retain the shape of the limb no have the limb take the shape of the insert
i
> also look at the definition of hydrostatic and try to incorporate it into
> the pressure casting method and i don’t see where it is as hydrostatic
means
> of or relating to fluids at rest or the pressures the emit or transmit, i
> have been a big advocate of vacuum casting since the mid 80’s and have
found
> to have much greater success
> just my thoughts
>
> Steve Smith
> —– Original Message —–
> From:
> To:
> Sent: Friday, August 11, 2000 5:39 AM
> Subject: Puzzled about pressure casting
>
>
> > Dear Colleagues,
> >
> > While the concept of hydrostatic sockets is appealing from the
standpoint
> of
> > evenly distributed forces, as soon as the pt loses volume distally, it
> would
> > seem you have lost that advantage and are back to the kinds of
> compensation
> > techniques used in a standard total surface bearing socket- and
therefore
> not
> > necessarily obtaining true hydrostatic support and blurring the
difference
> > between “hydrostatic” and total surface bearing.
> >
> > In addition, most of the pressure cast sockets I have seen are very
> rounded
> > and seem to be more prone to rotation.
> >
> > I have no doubt that people are getting good results, especially
> initially.
> > It just seems that the theory breaks down once volume has been lost- In
> this
> > case it seems better to start out with a total surface bearing socket
cast
> > with contours that prevent rotation.
> >
> > I am presenting these ideas for discussion and would like to know how
the
> > successful users of the pressure casting system would address them. The
> > simplicity and speed of the system is appealing….
> >
> > Also, is there a profile for those who might be more optimal candidates
> for
> > this pressure casting technique?
> >
> > Gerald Stark CPO presented an excellent paper at the last Academy
meeting
> > discussing different casting techniques. I wasn’t at the meeting but
these
> > are the types of ideas and papers where it would be beneficial to have
> panel
> > discussions with questions from the audience
> >
> > Mark Benveniste CP
> >
> >
